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An Unbiased Appraisal of Purchasing Power Parity, C. McDermott, Paul Cashin

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Abstract
Univariate studies of the hypothesis of unit roots in real exchange rates have yielded consensus point estimates of the half-life of deviations from purchasing power parity of between three to five years. However, least squares-based estimates of half-lives are biased downward. Accordingly, we follow Andrews (1993) and use median-unbiased estimators of the half-life of deviations from parity as a preferred measure of the persistence of real exchange rate shocks. We study this issue using real effective exchange rate (REER) data for 22 industrial countries in the post-Bretton Woods period. Three methods of bias correction are implemented, which yield cross-country averages of half-lives of deviations from parity ranging between 4 to 15 years, with the REER of several countries displaying permanent deviations from parity
Language
eng
Literary Form
non fiction
Note
Bibliographic Level Mode of Issuance: Monograph
Physical Description
1 online resource (35 pages)
Form Of Item
online
Isbn
9780128205082

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